# File lib/facter/util/memory.rb, line 37
  def self.vmstat_find_free_memory(args = [])
    cmd = 'vmstat'
    cmd += (' ' + args.join(' ')) unless args.empty?
    row = Facter::Core::Execution.exec(cmd).split("\n")[-1]
    if row =~ /^\s*\d+\s*\d+\s*\d+\s*\d+\s*(\d+)/
      memfree = $1
    end
  end